695  
FNCA52 TJSJ 200958  
FWFSJU  
 
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO  
NATIONAL WEATHER SERVICE SAN JUAN PR  
558 AM AST THU FEB 20 2020  
   
DISCUSSION
 
 
DRYING CONDITIONS PERSIST ACROSS THE REGION, WITH VERY LITTLE IN  
THE WAY OF WETTING RAINS SEEN YESTERDAY, ESPECIALLY IN  
SOUTHWESTERN PUERTO RICO. AND, THOUGH WINDS ARE SUBSIDING SOMEWHAT  
TODAY COMPARED TO YESTERDAY, THEY WILL REMAIN AROUND 10 TO 20 MPH,  
WITH STRONGER GUSTS POSSIBLE. NO SIGNIFICANT PRECIPITATION IS  
EXPECTED TODAY, AND MOSTLY SUNNY SKIES WILL GENERALLY PREVAIL.  
FURTHERMORE, A GENERALLY DRIER AIRMASS IS PUSHING ACROSS THE LOCAL  
ISLANDS TODAY INTO TOMORROW. KBDI IS APPROACHING THE CRITICAL  
THRESHOLDS IN CABO ROJO AS OF YESTERDAY, WITH A VALUE OF 538. AT  
CAMP SANTIAGO, THE KBDI IS IN EXCESS OF CRITICAL THRESHOLDS, WITH  
A VALUE OF 678. WITH THESE FACTORS IN CONSIDERATION, THE FIRE  
DANGER LEVEL IS CONSIDERED ELEVATED IN THE SOUTHWEST AND SOUTHEAST  
OF PUERTO RICO, THOUGH IT REMAINS LOW ELSEWHERE IN PUERTO RICO AND  
THE U.S. VIRGIN ISLANDS.  
 
PRZ014-211000-  
SOUTHEAST COASTAL PLAINS-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 20 10  
TEMP (24H TREND) 85 (+1) 67 (-3) 84  
RH % (24H TREND) 52 (-7) 89 (+3) 51  
20FTWND-VAL/AM(MPH) E 11 E 9  
20FTWND-RDG/PM(MPH) E 15 NE 9 SE 11  
MIXING HGT(FT-AGL/MSL)5226 5389  
TRANSPORT WND (MPH) E 22 E 13  
VENT RATE (KT-FT) 99692 59075  
DISPERSION 5 5  
DSI 6 4 5  
LAL 1 1 1  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ015-211000-  
SOUTHERN HILLS-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 10 10 20  
TEMP (24H TREND) 83 (+3) 66 (-2) 82  
RH % (24H TREND) 53 (-11) 91 (+2) 46  
20FTWND-VAL/AM(MPH) E 11 E 9  
20FTWND-RDG/PM(MPH) E 13 E 9 SE 10  
MIXING HGT(FT-AGL/MSL)5667 6688  
TRANSPORT WND (MPH) E 21 E 12  
VENT RATE (KT-FT) 102050 59078  
DISPERSION 5 5  
DSI 5 4 5  
LAL 1 1 1  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ016-211000-  
NORTH COASTAL PLAINS-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 10 20  
TEMP (24H TREND) 86 (+3) 69 (-4) 86  
RH % (24H TREND) 51 (-12) 86 (0) 48  
20FTWND-VAL/AM(MPH) E 10 G18 E 8  
20FTWND-RDG/PM(MPH) E 15 SE 9 G17 E 11  
MIXING HGT(FT-AGL/MSL)5068 5646  
TRANSPORT WND (MPH) E 22 E 12  
VENT RATE (KT-FT) 97698 59781  
DISPERSION 5 5  
DSI 6 5 5  
LAL 1 1 1  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ017-211000-  
NORTHERN HILLS-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR PCLDY  
PRECIP TYPE SHOWERS NONE SHOWERS  
CHANCE PRECIP (%) 10 0 30  
TEMP (24H TREND) 84 (+4) 65 (-4) 84  
RH % (24H TREND) 53 (-15) 93 (+4) 42  
20FTWND-VAL/AM(MPH) E 9 E 6  
20FTWND-RDG/PM(MPH) E 12 SE 7 E 7  
MIXING HGT(FT-AGL/MSL)6133 6847  
TRANSPORT WND (MPH) E 16 SE 7  
VENT RATE (KT-FT) 86994 55865  
DISPERSION 5 5  
DSI 6 3 5  
LAL 1 1 1  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ018-211000-  
WEST COAST-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR  
PRECIP TYPE SHOWERS NONE SHOWERS  
CHANCE PRECIP (%) 20 0 30  
TEMP (24H TREND) 82 (-3) 68 (-2) 82  
RH % (24H TREND) 56 (+1) 80 (-6) 49  
20FTWND-VAL/AM(MPH) E 9 E 8  
20FTWND-RDG/PM(MPH) SE 12 E 7 SE 8  
MIXING HGT(FT-AGL/MSL)5374 6024  
TRANSPORT WND (MPH) E 14 SE 8  
VENT RATE (KT-FT) 97748 58568  
DISPERSION 5 5  
DSI 5 4 5  
LAL 1 1 1  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ019-211000-  
EASTERN INTERIOR-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 10 20  
TEMP (24H TREND) 84 (+3) 66 (-4) 84  
RH % (24H TREND) 52 (-16) 92 (+2) 50  
20FTWND-VAL/AM(MPH) E 9 E 7  
20FTWND-RDG/PM(MPH) E 12 E 7 SE 10  
MIXING HGT(FT-AGL/MSL)5320 6205  
TRANSPORT WND (MPH) E 21 SE 13  
VENT RATE (KT-FT) 100624 59882  
DISPERSION 5 5  
DSI 5 3 5  
LAL 1 1 1  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ022-211000-  
LUQUILLO MOUNTAIN RANGE-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 50 20 20  
TEMP (24H TREND) 81 (+4) 63 (-5) 80  
RH % (24H TREND) 56 (-12) 92 (+2) 61  
20FTWND-VAL/AM(MPH) E 11 E 9  
20FTWND-RDG/PM(MPH) E 12 E 8 E 9  
MIXING HGT(FT-AGL/MSL)4984 4829  
TRANSPORT WND (MPH) E 22 SE 14  
VENT RATE (KT-FT) 97996 59389  
DISPERSION 5 5  
DSI 6 5 5  
LAL 1 1 1  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ023-211000-  
CENTRAL MOUNTAIN RANGE-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR PCLDY  
PRECIP TYPE SHOWERS NONE SHOWERS  
CHANCE PRECIP (%) 20 0 30  
TEMP (24H TREND) 82 (+4) 62 (-3) 82  
RH % (24H TREND) 53 (-12) 95 (+4) 38  
20FTWND-VAL/AM(MPH) E 10 E 8  
20FTWND-RDG/PM(MPH) E 11 E 7 SE 8  
MIXING HGT(FT-AGL/MSL)6286 6972  
TRANSPORT WND (MPH) E 13 SE 7  
VENT RATE (KT-FT) 86768 51790  
DISPERSION 5 5  
DSI 5 3 5  
LAL 1 1 1  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
PRZ024-211000-  
CAYEY MOUNTAIN RANGE-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY MCLEAR MCLEAR  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 50 20 20  
TEMP (24H TREND) 81 (+3) 66 (-2) 80  
RH % (24H TREND) 54 (-13) 90 (-1) 59  
20FTWND-VAL/AM(MPH) E 11 E 8  
20FTWND-RDG/PM(MPH) E 13 E 7 E 10  
MIXING HGT(FT-AGL/MSL)5075 5161  
TRANSPORT WND (MPH) E 23 E 14  
VENT RATE (KT-FT) 102639 59342  
DISPERSION 5 5  
DSI 5 3 5  
LAL 1 1 1  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ025-211000-  
VIEQUES-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 40 30 30  
TEMP (24H TREND) 83 (0) 73 (-3) 81  
RH % (24H TREND) 56 (-9) 83 (+2) 62  
20FTWND-VAL/AM(MPH) E 16 E 12  
20FTWND-RDG/PM(MPH) E 15 E 14 E 10  
MIXING HGT(FT-AGL/MSL)4113 3383  
TRANSPORT WND (MPH) E 23 E 13  
VENT RATE (KT-FT) 81900 37213  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ026-211000-  
CULEBRA-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 30 30 30  
TEMP (24H TREND) 84 (+3) 72 (-3) 81  
RH % (24H TREND) 56 (-13) 83 (-1) 62  
20FTWND-VAL/AM(MPH) E 17 E 14  
20FTWND-RDG/PM(MPH) E 16 E 15 E 11  
MIXING HGT(FT-AGL/MSL)3656 3223  
TRANSPORT WND (MPH) E 23 E 20  
VENT RATE (KT-FT) 73120 53430  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 2 2  
 
REMARKS...NONE.  
 

 
 
PRZ027-211000-  
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER MCLEAR MCLEAR MCLEAR  
PRECIP TYPE SHOWERS NONE SHOWERS  
CHANCE PRECIP (%) 10 0 10  
TEMP (24H TREND) 84 (-2) 67 (-3) 84  
RH % (24H TREND) 53 (0) 84 (-2) 46  
20FTWND-VAL/AM(MPH) E 13 E 11  
20FTWND-RDG/PM(MPH) SE 17 E 10 G18 SE 12  
MIXING HGT(FT-AGL/MSL)5453 6137  
TRANSPORT WND (MPH) E 22 SE 13  
VENT RATE (KT-FT) 102216 59725  
DISPERSION 5 5  
DSI 5 5 5  
LAL 1 1 1  
HAINES INDEX 2 3 2  
 
REMARKS...NONE.  
 

 
 
VIZ001-211000-  
SAINT THOMAS AND SAINT JOHN-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 30 30  
TEMP (24H TREND) 84 (+4) 69 (-4) 82  
RH % (24H TREND) 54 (-18) 86 (0) 59  
20FTWND-VAL/AM(MPH) E 16 E 13  
20FTWND-RDG/PM(MPH) E 17 E 15 E 10  
MIXING HGT(FT-AGL/MSL)4091 3306  
TRANSPORT WND (MPH) E 24 E 21  
VENT RATE (KT-FT) 89457 59028  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 3 2 2  
 
REMARKS...NONE.  
 

 
 
VIZ002-211000-  
ST CROIX-  
558 AM AST THU FEB 20 2020  
 
TODAY TONIGHT FRI  
 
CLOUD COVER PCLDY PCLDY PCLDY  
PRECIP TYPE SHOWERS SHOWERS SHOWERS  
CHANCE PRECIP (%) 20 20 30  
TEMP (24H TREND) 85 (+2) 71 (-2) 84  
RH % (24H TREND) 52 (-12) 87 (+2) 58  
20FTWND-VAL/AM(MPH) E 16 E 13  
20FTWND-RDG/PM(MPH) E 15 E 14 E 10  
MIXING HGT(FT-AGL/MSL)4897 3998  
TRANSPORT WND (MPH) E 25 E 18  
VENT RATE (KT-FT) 107078 67660  
DISPERSION 5 5  
DSI 6 6 6  
LAL 1 1 1  
HAINES INDEX 2 2 2  
 
REMARKS...NONE.  
 

 
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab PR Page Main Text Page